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x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965169AbeCSVky (ORCPT ); Mon, 19 Mar 2018 17:40:54 -0400 Received: from mail-by2nam01on0118.outbound.protection.outlook.com ([104.47.34.118]:14025 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965017AbeCSP7D (ORCPT ); Mon, 19 Mar 2018 11:59:03 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: KT Liao , Dmitry Torokhov , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 034/281] Input: elantech - force relative mode on a certain module Thread-Topic: [PATCH AUTOSEL for 4.9 034/281] Input: elantech - force relative mode on a certain module Thread-Index: AQHTv5sgbfVnsgzQU0ubSHg37IhOOA== Date: Mon, 19 Mar 2018 15:58:30 +0000 Message-ID: <20180319155742.13731-34-alexander.levin@microsoft.com> References: <20180319155742.13731-1-alexander.levin@microsoft.com> In-Reply-To: <20180319155742.13731-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0726;7:+aeht0jDY/SEx192qjYTzXjcisjnBUTn+rrKb964ro3+VyQExOquUidjSz3ZG5JN3V2lRwmifI5seniu0O/KEzFGgjru7uzw9SZxyGVg0vnjuq/wQA6GRj5QJamDQApzAX5Cqh5lPaPrpL62GpXKBqBfZbnk/DEn0pFjGfFnkgENZAgQrxK6xdxTehuZXEt1EXUZpH2NGRDTEuSEckmlhrUJa7lhOk7OEvBm+KjroW30W1qSWc25k6cElHBf0Qln;20:+40E8K5Ej1SWXaQ7h56u8cdU1JS7ys1N1mMoKX1K2uAydeNMF6ebOgGNMPOC7ZSUIANyX8ylHpObsNHHswHIXHEoQKp4Diisk4Y5h8eZ4AmMJXGodcGcZpdqKACITOfZ2yv8S+nGC8M4wx62NtDZmmoPOP80BU6zo0vQg+ERgAs= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 293bcca7-a318-4c84-9f33-08d58db253f2 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0726; 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Signed-off-by: KT Liao Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- drivers/input/mouse/elantech.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.= c index 59603a5728f7..c519c0b09568 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1711,6 +1711,17 @@ int elantech_init(struct psmouse *psmouse) etd->samples[0], etd->samples[1], etd->samples[2]); } =20 + if (etd->samples[1] =3D=3D 0x74 && etd->hw_version =3D=3D 0x03) { + /* + * This module has a bug which makes absolute mode + * unusable, so let's abort so we'll be using standard + * PS/2 protocol. + */ + psmouse_info(psmouse, + "absolute mode broken, forcing standard PS/2 protocol\n"); + goto init_fail; + } + if (elantech_set_absolute_mode(psmouse)) { psmouse_err(psmouse, "failed to put touchpad into absolute mode.\n"); --=20 2.14.1